Suitability of carbon nanotubes grown by chemical vapor deposition for electrical devices

Using carbon nanotubes (CNTs) produced by chemical vapor deposition, we have explored different strategies for the preparation of carbon nanotube devices suited for electrical and mechanical measurements. Though the target device is a single small diameter CNT, there is compelling evidence for bundling, both for CNTs grown over structured slits and on rigid supports. Whereas the bundling is substantial in the former case, individual single-wall CNTs (SWNTs) can be found in the latter. Our evidence stems from mechanical and electrical measurements on contacted tubes. Furthermore, we report on the fabrication of low-ohmic contacts to SWNTs. We compare Au, Ti and Pd contacts and find that Pd yields the best results.Comment: pdf including figures, see: http://www.unibas.ch/phys-meso/Research/Papers/2004/Suitability-CVD-tubes.pd

The Refined Topological Vertex

We define a refined topological vertex which depends in addition on a parameter, which physically corresponds to extending the self-dual graviphoton field strength to a more general configuration. Using this refined topological vertex we compute, using geometric engineering, a two-parameter (equivariant) instanton expansion of gauge theories which reproduce the results of Nekrasov. The refined vertex is also expected to be related to Khovanov knot invariants.Comment: 70 Pages, 23 Figure

STAT3 Genotypic Variant rs744166 and Increased Tyrosine Phosphorylation of STAT3 in IL-23 Responsive Innate Lymphoid Cells during Pathogenesis of Crohn\u27s Disease

Crohn\u27s disease (CD) results from dysregulated immune responses to gut microbiota in genetically susceptible individuals, affecting multiple areas of the gastrointestinal tract. Innate lymphoid cells (ILCs) are tissue-resident innate effector lymphocytes which play crucial roles in mucosal immune defense, tissue repair, and maintenance of homeostasis. The accumulation of IFN-γ-producing ILC1s and increased level of proinflammatory cytokines produced by ILCs has been observed in the inflamed terminal ileum of CD patients. To date, the precise mechanisms of ILC plasticity and gene regulatory pathways in ILCs remain unclear. Signal transducer and activator of transcription 3 (STAT3) regulates gene expression in a cell-specific, cytokine-dependent manner, involving multiple immune responses. This study proposes the positive correlation between the prevalence of STAT3 rs744166 risky allele A with the severity of disease in a cohort of 94 CD patients. In addition, the results suggest an increased STAT3 activity in the inflamed ileum of CD patients, compared to unaffected ileum sections. Notably, IL-23 triggers the differentiation of CD117+NKp44- ILC3s and induces the activation of STAT3 in both CD117+NKp44- and CD117-NKp44- ILC subsets, implying the involvement of STAT3 in the initiation of ILC plasticity. Moreover, carriage of STAT3 A risk allele exhibited a higher basal level of STAT3 tyrosine phosphorylation, and an increased IL-23 triggered the pSTAT3 level. We also demonstrated that there was no delayed dephosphorylation of STAT3 in ILCs of both A/A and G/G donors. Overall, the results of this study suggest that IL-23-induced activation of STAT3 in the CD117-NKp44- ILC1s involves in ILC1-to-ILC3 plasticity and a potential regulatory role of ILC1 function. Those genetically susceptible individuals carried STAT3 rs744166 risky allele appear to have higher basal and cytokine-stimulated activation of STAT3 signal, leading to prolonged inflammation and chronic relapse

Budaya Populer Game Pokemon Go Sebagai Soft Diplomacy Jepang

Pokemon Go is a smartphone game that blends the real and digital worlds, tasking players with exploring their neighborhoods to find creatures and treasure for in-game use. This research describes the ways Japan uses its soft power in International coorporation relations, particulary through Pokemon Go\u27s game. Based on Joseph S. Nye, Jr, the soft power defined as the ability of country to achieve its goal using cultural attraction rather than coercion and violence. After the World War II, Japan has tried to change its image as war crime through popular culture, such as anime, manga and cosplay. According to Nye, Japan has more potential resources in soft power compared to the other countries. This research is focus on Popular Culture of Pokemon Go\u27s Game as Japan\u27s Soft Diplomacy. Pokemon Go is one of Japan\u27s cultural diplomacy activities and the other countries uses popular culture to strengthen the positive image of Japan in the International world. The development of popular culture as a soft power and soft diplomacy also a diplomacy tool of development that can be used by Japan in conducting foreign policy in relation to International cooperation

Budaya Komunikasi dalam Masyarakat Jepang

Budaya dan komunikasi memiliki hubungan timbal Balik. Budaya mempengaruhi komunikasi dan komunikasi mempengaruhi budaya. Penelitian ini fokus pada budaya komunikasi pada masyarakat Jepang. Etika dalam berkomunikasi merupakan bagian yang tidak dapat dipisahkan dalam USAha menyampaikan pesan atau tuturan kepada peserta tutur lain. Etika dalam berkomunikasi dan menyampaikan pesan masyarakat Jepang meliputi Aizuchi (Memberikan Respon), Aisatsu (Memberi Salam), dan Zoutoubunka (Budaya Pemberian Hadiah). Kemudian, pola komunikasi dalam interaksi sosial masyarakat Jepang meliputi Uchi-Soto (Dalam-Luar), Honne-Tatemae (Sikap Sesungguhnya-Sikap yang Tampak dari Luar), Horenso atau Houkoku (Laporan), Renraku (Komunikasi), Soudan (Konsultasi) dan Keigo (Bahasa Sopan). Dalam berkomunikasi, mereka lebih banyak menggunakan komunikasi non-verbal. Komunikasi non-verbal yang digunakan dalam interaksi masyarakat Jepang adalah Miburi (gerak tubuh), kontak mata, dan ekspresi wajah

How lipid nanocarriers improve transdermal delivery of olanzapine

The development of a transdermal nanocarrier drug delivery system with potential for the treatment of psychiatric disorders, such as schizophrenia and bipolar disorder, is described. Lipid nanocarriers (LN), encompassing various solid:liquid lipid compositions were formulated and assessed as potential nanosystems for transdermal delivery of olanzapine. A previously optimized method of hot high pressure homogenization (HPH) was adopted for the production of the LN, which comprised solid lipid nanoparticles (SLN), nanostructured lipid carriers (NLC) and nanoemulsions (NE). Precirol ® was selected as the solid lipid for progression of studies. SLN exhibited the best performance for transdermal delivery of olanzapine, based on in vitro release and permeation studies, coupled with results from physicochemical characterization of several solid:liquid lipid formulations. Stability tests, performed to give an indication of long-term storage behavior of the formulations, were in good agreement with previous studies for the best choice of solid:liquid lipid ratio. Overall, these findings highlight the SLN-based formulation as promising for the further inclusion in and production of transdermal patches, representing an innovative therapeutic approach

Split-gate quantum point contacts with tunable channel length

We report on developing split-gate quantum point contacts (QPCs) that have a tunable length for the transport channel. The QPCs were realized in a GaAs/AlGaAs heterostructure with a two- dimensional electron gas (2DEG) below its surface. The conventional design uses 2 gate fingers on the wafer surface which deplete the 2DEG underneath when a negative gate voltage is applied, and this allows for tuning the width of the QPC channel. Our design has 6 gate fingers and this provides additional control over the form of the electrostatic potential that defines the channel. Our study is based on electrostatic simulations and experiments and the results show that we developed QPCs where the effective channel length can be tuned from about 200 nm to 600 nm. Length-tunable QPCs are important for studies of electron many-body effects because these phenomena show a nanoscale dependence on the dimensions of the QPC channel

Encounters with diversity: Childrens friendships and parental responses

This paper reports on a project exploring the friendships of children and adults in ‘super-diverse’ (Vertovec, 2007) localities in London, England, examining whether and how friendships are made and maintained across ethnic and social class differences. The aim is to identify what friendships reveal about the nature and extent of ethnic and social divisions in contemporary multicultural society. Drawing on interviews with children and their parents, this paper analyses affective parental responses to their children’s friendships, identifying instances where parents seek to manage these friendships. We identify the importance of the ‘ease of similarity’ for many parents concerning their children’s friendships, and the relative lack of concrete practices amongst parents to support their children’s friendships across difference. However, we also note parental support for living in super-diverse localities and children attending schools therein